Krohn M A, Keltner J L, Johnson C A
Am J Ophthalmol. 1979 Nov;88(5):859-63. doi: 10.1016/0002-9394(79)90563-4.
We compared photogrammetric measurements of optic cup volume, area, and depth made from two types of stereophotography and two types of film to determine their effect on the precision of the measurements. We found that measurements from simultaneous stereophotography (Donaldson stereoscopic fundus camera) had a smaller range of values and a smaller mean percent error than measurements from consecutive stereophotography (Zeiss Fundus Flash II camera). However, a Student's t-test for related measures showed no significant difference. The measurements from Kodachrome 25 film and Kodak Photomicrography film varied in range and mean percent error without a pattern. The Student's t-test for related measures showed no significant difference.
我们比较了通过两种类型的立体摄影和两种类型的胶片所进行的视杯体积、面积和深度的摄影测量，以确定它们对测量精度的影响。我们发现，与连续立体摄影（蔡司眼底闪光II型相机）测量相比，同步立体摄影（唐纳森立体眼底相机）测量的值范围更小，平均百分比误差更小。然而，相关测量的学生t检验显示无显著差异。柯达克罗姆25胶片和柯达显微摄影胶片的测量在范围和平均百分比误差方面有所不同，且无规律可循。相关测量的学生t检验显示无显著差异。
